MESON Chess Problem Database

Problem Display
PID: 160082 (8/8/4K3/3N1p2/3pk2n/7Q/8/8 w - - 0 1)

Andreev, Aleksandr Grigorevich

Bankovskaya gazeta, 1996

8/8/4K3/3N1p2/3pk2n/7Q/8/8

#2

3 + 4

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Sg2
      • 2.Qxf5#
    • 1...Sf3
      • 2.Qxf5#
    • 1...Sg6
      • 2.Qxf5#
    • 1...d3
      • 2.Qe3#
    • 1...f4
      • 2.Sf6#
  • Tries
    • 1.Qg3?
      • threat
        • 2.Sf6#
      • 1...d3
        • 2.Qf4#
        • 2.Qe3#
      • 1...Sf3!
  • Keys
    • 1.Qf1!
      • threat
        • 2.Qe2#
      • 1...d3
        • 2.Qf4#
      • 1...Sg2
        • 2.Qxf5#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 3
  • Sets
    • S(c);N_GUARD::QAB1(A),XP(d)
    • P(a);N_GUARD::QAR1(A)
    • P(d);SBLOCK::S(B)
  • Tries
    • Try
      • Q(A);
      • Threat
        • S(B)
      • Refutation
        • S(c);
  • Actual
    • Q(A);
    • Threat
      • QAR2(A)
    • Vars
      • P(a);SBLOCK::QAR1(A)
      • S(c);N_GUARD::QAB1(A),XP(d)
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